A Multiple-Comparison Procedure for Comparing Four Treatment Means Produced the Confidence

question 6

Multiple Choice

A multiple-comparison procedure for comparing four treatment means produced the confidence intervals shown below. Rank the means from smallest to largest. Use solid lines to connect those means which are not significantly different. $$\begin{array} { l } \left( \mu _ { A } - \mu _ { B } \right) : ( 16,36 ) \\\left( \mu _ { A } - \mu _ { C } \right) : ( 8,22 ) \\\left( \mu _ { A } - \mu _ { D } \right) : ( 2,22 ) \\\left( \mu _ { B } - \mu _ { C } \right) : ( - 21 , - 1 ) \\\left( \mu _ { B } - \mu _ { D } \right) : ( - 23 , - 5 ) \\\left( \mu _ { C } - \mu _ { D } \right) : ( - 12 , - 1 ) \end{array}$$

• A) \(\mathrm { BC } \overline { \mathrm { A } \mathrm { D } }\)
• B) \(\overline { \mathrm { CD } } \mathrm { B } \mathrm { A }\)
• C) \(\mathrm { B } \overline { \mathrm { CD } } \mathrm { A }\)
• D) \(B C D A\)

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Definitions:

Complete Protein

A source of protein that contains an adequate proportion of all nine of the essential amino acids necessary for the dietary needs of humans.

Colic

A condition characterized by frequent, prolonged, and intense crying or fussiness in a healthy infant without an obvious cause.

Second-Hand Smoke

Smoke that is not directly inhaled by a smoker but is exhaled into the environment, posing health risks to others.

Apneic

Referring to apnea, a momentary pause in breathing that occurs particularly while sleeping.